I found these Love Potions attributed to Gundella through a Google search. There is no book title given but apparently they were part of one of those Time-Life compilations on witchcraft, spells or something of the sort or at least the website says they are. Another ambiguous lead!
I've also come across a mention of her putting out a cookbook called "Witch in the Kitchen" but I can't confirm the title and find no evidence for it whatsoever although there are several other authors who put out a cookbook with that same moniker. Anyhow, here are the potions:
HANKY PANKY SANDWICH
Combine 1/2 pound of ground beef, 1/2 pound of pork saussage, 1/2
pound of shredded chedder cheese, 1/2 tsp. of oregano, 1/2 tsp. of garlic
powder in a bowl, then spread this pate on thin slices of rye or
pumpernickle bread. Cook the open face sandwiches under a broiler until
the meat is well browned. The oregano and garlic charge the pate with
LOVE APPLE COCKTAIL
"Stir together in a saucerpan 2 cups of tomato juice, 1 bay leaf, 1 tsp.
basil, and a dash each of dill and worcestershire sauce. Simmer the
mixture for 3 minutes, then chill in a refrigerator. Strain the
beverage before serving. Dill is reportedly powerful enough to bring
on proposals of marriage, so you may wish to substitute celery salt
unless your intentions are serious."
ROCKY ROAD ROMANCER FUDGE
"Combine 12 oz. of semi-sweet chocalote chips, 12 oz. of butterscotch
chips, and 1 cup of peanut butter in a bowl. Microwave the ingredients
for 4 minutes or melt them in a double boiler. Fold in 10 1/2 oz. of
minature marshmallows, and 1/2 cups of salted peanuts. Spread this
mixture in a 9-by-13 inch pan and refrigerate until set. Adding a
tsp. of cinnamon to the fudge may inspire a marriage proposal."
ROSE HIPS TEA
"Prepare 4 cups of rose hips tea following the directions on the package,
but add 1/2 tsp. of catnip and 1/8 tsp. of crushed rosemary. Let the
tea steep for 8 to 10 minutes, then strain it and serve it unsweetened or
with honey. Roses, long associated with love and beauty, and rosemary,
which have been related to fidelity, are the key ingredients here."
"Witch Gundella is a modern witch her recipes are modern. Her
ingredients can be found in a supermarket and the recipes and are
easy to make."
--from Time-Life books